CDN
also Content Delivery Network
A geographically distributed network of servers that caches and serves content from a location near each user to speed up load times.
Analogy
Like having neighborhood warehouses so deliveries arrive faster than shipping from one distant hub.
Why it matters
It makes your funnel and landing pages load fast worldwide, which improves conversion and user experience.
In practice
Images on a Vercel-hosted page are served from a nearby CDN edge node for faster loads.